The site Interview Street says that they use "g++ 4.6.1, C++0x Mode". As I know the C++11 was called C++0x before official release. So does that mean they provide unstable or unofficial support for C++11?
Can I safely use C++11 features while coding on "Interview Street"?
I'd recommend GCC 4.7 for better support. But you can use some C++11 features in 4.6 too. Here's the list of them: